/*
 * Copyright (C) 2025 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "ffprobe.h"
#include "ffprobe_thread.h"
#include "../log/ohos_log.h"
#include <pthread.h>
static pthread_mutex_t g_mutex = PTHREAD_MUTEX_INITIALIZER;
static pthread_cond_t g_cond = PTHREAD_COND_INITIALIZER;
static bool g_isRunning = false;
pthread_t g_pthread;
char **g_argv = NULL;
int g_argc = 0;
/**
 * 新建子线程执行ffprobe命令
 */
int FfprobeThreadRunCmd(int cmdNum, char **cmds)
{
    LOGD("FfprobeThreadRunCmd enter");
    g_argc = cmdNum;
    g_argv = cmds;
    int temp = pthread_create(&g_pthread, NULL, FfprobeThread, NULL);
    if (temp != 0) {
        LOGE("can't create ffprobe_thread: %s ", strerror(temp));
        return 1;
    }
    LOGD("FfprobeThreadRunCmd leave");
    return 0;
}
static void (*g_ffprobeCallback)(char* result, int length);
/**
 * 注册线程回调
 */
void FfprobeThreadCallback(void (*cb)(char* result, int length))
{
    LOGD("FfprobeThreadCallback enter");
    g_ffprobeCallback = cb;
    LOGD("FfprobeThreadCallback leave");
}
void* FfprobeThread(void* arg)
{
    LOGD("FfprobeThread enter");
    pthread_mutex_lock(&g_mutex);
    while (g_isRunning) {
        pthread_cond_wait(&g_cond, &g_mutex);
    }
    g_isRunning = true;
    pthread_mutex_unlock(&g_mutex);
    char* result = NULL;
    int length = ffprobe_exec(g_argc, g_argv, &result);
    if (g_ffprobeCallback) {
        g_ffprobeCallback(result, length);
        if (result != NULL) {
            LOGI("FfprobeThread av_free result");
            av_free(result);
        }
    }
    pthread_mutex_lock(&g_mutex);
    g_isRunning = false;
    pthread_cond_signal(&g_cond); // 唤醒其他可能等待的线程
    pthread_mutex_unlock(&g_mutex);
    LOGD("FfprobeThread leave");
}

/**
 * 退出线程
 */
void FfprobeThreadExit(int ret)
{
    if (g_ffprobeCallback) {
        g_ffprobeCallback(0, "");
    }
    pthread_mutex_lock(&g_mutex);
    g_isRunning = false;
    pthread_cond_signal(&g_cond); // 唤醒其他可能等待的线程
    pthread_mutex_unlock(&g_mutex);
}